/** * Opens and returns the writer for the {@code rotation} property. The {@code rotation} property defines the rotation of the billboard, in radians, counter-clockwise from the alignedAxis. If not specified, the default value is 0.0. */ @Nonnull public final DoubleCesiumWriter openRotationProperty() { openIntervalIfNecessary(); return this.<DoubleCesiumWriter> openAndReturn(getRotationWriter()); }